Comment by citrusybread

that's 51.2% of Americans with Hypertension, not 51.2% of Americans at large.

CDC says:

    Percent of people using at least one prescription drug in the past 30 days: 49.9% (2017-March 2020)
    Percent of people using three or more prescription drugs in the past 30 days: 24.7% (2017-March 2020)
    Percent of persons using five or more prescription drugs in the past 30 days: 13.5% (2017-March 2020)

Source: National Health and Nutrition Examination Survey. Published by: Health, United States. Table RxUse and NCHS Data Query System, Prescription Medication Use Tables One or more, Three or more, Five or more.

https://www.cdc.gov/nchs/fastats/drug-use-therapeutic.htm

It is coincidentally close to 51.2%, but not the same statement.